12747821227434 has 32 divisors (see below), whose sum is σ = 28328686433280. Its totient is φ = 4249244520000.

The previous prime is 12747821227429. The next prime is 12747821227469. The reversal of 12747821227434 is 43472212874721.

12747821227434 is a `hidden beast` number, since 1 + 2 + 7 + 4 + 7 + 82 + 122 + 7 + 434 = 666.

12747821227434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7988434 + ... + 9450434.

It is an arithmetic number, because the mean of its divisors is an integer number (885271451040).

Almost surely, 2^{12747821227434} is an apocalyptic number.

12747821227434 is an abundant number, since it is smaller than the sum of its proper divisors (15580865205846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12747821227434 is a wasteful number, since it uses less digits than its factorization.

12747821227434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623483 (or 1623477 counting only the distinct ones).

The product of its digits is 8429568, while the sum is 54.

The spelling of 12747821227434 in words is "twelve trillion, seven hundred forty-seven billion, eight hundred twenty-one million, two hundred twenty-seven thousand, four hundred thirty-four".